After reading the headline from thisUK article I was bit miffed, if not downright aggrivated:
This is especially strange since she was convicted during WWII. Weren't we done with this nonsence by then? But it gets stranger once you dig a little deeper. Apparently the lady in question, seemed to have information about wartime ship sinkings that hadn't been made public. She was imprisioned for 9 months. Churchill did away with the laws after the war but the woman didn't get a pardon.
She seemed to know something. The Government, having no evidence she was a spy but fearfull D-day information might be leaked, silenced her. Of course it's pretty clear how we'd handle something like this today. Off to Gitmo for a good waterboarding.